README
¶
You can execute the example by running $ dyd -serve in this directory and
pointing your browser to http://localhost:6226.
To only convert the example into a go install-able repository issue $ dyd.
In either case here are the files after running dyd:
examples/db2/index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>db2 example</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style><? write("%s", ctx.W3CSS()) ?></style>
</head>
<body style="background-color: #5864ff;">
<div class="w3-container w3-text-white">
<p><?
// A web server logging visits in a persistent database and showing the
// last visited time, if any.
// This is the same as the 'db' example, but demonstrates mixing HTML
// and Go files.
write("%s", message(ctx))
?>
</p>
</div>
</body>
</html>
examples/db2/dyd.go
// Code generated by dyd, DO NOT EDIT.
package main
import (
"golang.org/x/net/html"
"modernc.org/dyd/dyd"
)
// dydStart starts the webapp. dydStart always returns a non-nil error.
func dydStart(beforeListen ...func(a dyd.App) error) error {
app, err := dyd.NewApp()
if err != nil {
return err
}
app.Bind("/index.html", Serve_index_1html)
app.AddMeta("/index.html", []html.Attribute{
html.Attribute{Namespace: "", Key: "charset", Val: "utf-8"},
})
app.AddMeta("/index.html", []html.Attribute{
html.Attribute{Namespace: "", Key: "name", Val: "viewport"},
html.Attribute{Namespace: "", Key: "content", Val: "width=device-width, initial-scale=1"},
})
app.AddTitle("/index.html", "db2 example")
for _, f := range beforeListen {
if err = f(app); err != nil {
return err
}
}
return app.ListenAndServe(":6226")
}
examples/db2/index.html.go
// Code generated by dyd, DO NOT EDIT.
package main
import (
"modernc.org/dyd/dyd"
)
// Serve_index_1html produces /index.html.
func Serve_index_1html(ctx *dyd.Context, write func(s string, args ...any) error) {
write(`<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>db2 example</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>`)
write("%s", ctx.W3CSS())
write(`</style>
</head>
<body style="background-color: #5864ff;">
<div class="w3-container w3-text-white">
<p>`)
// A web server logging visits in a persistent database and showing the
// last visited time, if any.
// This is the same as the 'db' example, but demonstrates mixing HTML
// and Go files.
write("%s", message(ctx))
write(`
</p>
</div>
</body>
</html>
`)
}
examples/db2/main.go
// Code generated by dyd, DO NOT EDIT.
package main
import "log"
func main() {
log.Fatal(dydStart())
}
examples/db2/message.go
package main
import (
"bytes"
"context"
"fmt"
"time"
"modernc.org/dyd/dyd"
)
func message(ctx *dyd.Context) (r []byte) {
b := bytes.NewBuffer(nil)
conn, err := ctx.DBConn(context.Background())
if err != nil {
fmt.Fprintf(b, "cannot connect to database: %v", err)
return
}
if _, err := conn.ExecContext(context.Background(), "create table if not exists log(visited timestamp);"); err != nil {
fmt.Fprintf(b, "cannot create table 'log': %v", err)
return
}
row := conn.QueryRowContext(context.Background(), "select count(*) from log;")
var cnt int64
if err := row.Scan(&cnt); err != nil {
fmt.Fprintf(b, "scanning row: %v", err)
return
}
fmt.Fprintf(b, "visit count: %d", cnt+1)
if cnt > 0 {
row := conn.QueryRowContext(context.Background(), "select visited from log order by visited desc limit 1;")
var last time.Time
if err := row.Scan(&last); err != nil {
fmt.Fprintf(b, "scanning row: %v", err)
return
}
fmt.Fprintf(b, ", last visit at %s", last.Format(time.RFC1123Z))
}
conn.ExecContext(context.Background(), "insert into log(visited) values(?)", time.Now())
return b.Bytes()
}
Documentation
¶
There is no documentation for this package.
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